Five balls numbered 1 to 5 are suspended...

Five balls numbered 1 to 5 are suspended using separate threads. The pairs of balls (1, 2),(2, 4) and (5, 1) show attraction while the pairs (2, 3) and (4, 5) show repulsion. The ball 1 is:

A

positively charged

B

negatively charged

C

neutral

D

may be positively or negatively charged

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